Whichever puts you farther from the center of the Earth.
Airplane? What airplane? My paper airplane wings weigh less than 8 grams.
in an airplane
Stand on a scale. Figure out how much you weigh. Then pick up the airplane and stand on the scale. Subtract how much you originally weighed, and that is the weight of the airplane.
a bunch.
A paper airplane? A 747? Cessna?
lots of kilograms
An airplane's weight ranges from under 1000 lbs to over 500 tons.
5
they weigh about 497 pounds.
There are many kinds of penguins, and each of them will weigh a different amount. The tiny Little Blue Penguin can weigh around 3.3 pounds, while the huge Emperor Penguin can weigh around 84 pounds.
They can weigh from 3,000 pounds all the way up to over 800,000 pounds.
It usually has to weigh below 60 pounds, but check with the airline for a definite answer